Reza’s collection US, India and British stamps. If the ratio of US to India stamps is 5 is to 2 and the ratio of Indian to British stamps is 5 is to 1, what is the ratio of US to British stamps?
Solution
Correct Answer: Option D
US : Indian = 5 : 2 = 25 : 10 [Multiplying with 5]
Indian : British = 5 : 1 = 10 : 2 [Multiply with 2]
Thus,
US : Indian : British = 25 : 10 : 2
or, US : British = 25 : 2
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